Which organism would be the least affected by the toxic mercury? a)zooplankton
b)small fish
c)larger fish
d)shark

Zooplankton(A)

Explanation:

Because the toxic mercury builds up in the bigger organsims

the dark variety, as they are not visible on the dark tree barks

explanation:

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]